material for expansion joint Baird Standish 23 Feb 2011 10:11 EST

I have a project just finishing up restoring a travertine floor.
Right above a set of steps there is a grout line that continues to
crack and we would like to replace it with a flexible material that
matches the travertine tiles.  Have tried putting a caulk seam in and
matching the color, but the caulk is weak and doesn't stand up to the
foot traffic.  Also having a hard time color matching.  Any thoughts?

>From the desk of
Baird Standish
Managing Partner
Facility Specialists, LLC
1616 Walnut St.
Philadelphia, PA 19103
Phone: 215-732-7505
Fax: 215-546-9160